kristofer/JavaExercism: lots of exercises in java... from https://github.com/exercism/java

lots of exercises in java... from https://github.com/exercism/java

MichaelSpets 7acd61b229 series: rename variable		9 lat temu
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example/java	Added tests and example code for the Series exercise	9 lat temu
main/java	Delete all unused .keep files	9 lat temu
test/java	series: rename variable	9 lat temu